From owner-freebsd-arch Mon Jun 19 9:48:31 2000 Delivered-To: freebsd-arch@freebsd.org Received: from spirit.jaded.net (shortbus.jaded.net [216.94.132.8]) by hub.freebsd.org (Postfix) with ESMTP id 1C44737BCC2; Mon, 19 Jun 2000 09:48:27 -0700 (PDT) (envelope-from dan@spirit.jaded.net) Received: (from dan@localhost) by spirit.jaded.net (8.9.3/8.9.3) id MAA02315; Mon, 19 Jun 2000 12:45:47 -0400 (EDT) (envelope-from dan) Date: Mon, 19 Jun 2000 12:45:46 -0400 From: Dan Moschuk To: Poul-Henning Kamp Cc: Dag-Erling Smorgrav , Dan Moschuk , "Jeroen C. van Gelderen" , Mark Murray , arch@FreeBSD.ORG Subject: Re: (2nd iteration) New /dev/(random|null|zero) - review, please Message-ID: <20000619124546.A2268@spirit.jaded.net> References: <44778.961423462@critter.freebsd.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <44778.961423462@critter.freebsd.dk>; from phk@critter.freebsd.dk on Mon, Jun 19, 2000 at 04:04:22PM +0200 Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG | >Hmm, yes, that wasn't quite what I meant. I was actually thinking | >about purpose-made RNGs vs. custom-made (e.g. lava lamp + webcam), the | >idea being that with the latter, a) you know it doesn't contain an | >intentional steganographic fingerprint and b) you have complete | >control over the RNG and can vary its output in unpredictable ways | >(moving the camera, changing the background...) which hopefully defeat | >recognition without affecting randomness. | | Run your Intel built RNG through a cryptographic quality hash ? | | If you frustrate the output by running it though MD5 and feed a few | random bits from your keyboard interrupt in there as well ? | | I wouldn't worry. Not to worry. The i82802 isn't meant to replace our current random number generator, but rather as a source of entropy for The Bigger Picture (Yarrow). We will still harvest entropy from various interrupts and other system sources. Which brings up another interesting point. Mark, I believe there are still some architectual issues with the Yarrow design. Can you comment on this status? -- Dan Moschuk (TFreak!dan@freebsd.org) "Don't get even -- get odd!" To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message